13 results for “hair”
The Human Body
Skin, Hair and Nails
hairs upright, giving you goosebumps. Hair and nails Hair and nails are both made of keratin
Article · 3 min read
The Human Body
The Senses
hair cells sit on a membrane that vibrates at different places for different pitches, high notes
Article · 4 min read
Matter, Energy & Physics
Electricity and Magnetism
hair onto the rubber, leaving the balloon negative and your hair positive, and because opposite charges
Article · 4 min read
Plants & Fungi
Carnivorous Plants
hairs inside. An insect walking across the lobe brushes a hair. One touch does nothing; the plant
Article · 4 min read
The Human Body
Lungs and Breathing
hair. The airways are lined with cells that beat tiny hairs upward, sweeping mucus and the debris
Article · 4 min read
The Human Body
The Heart and Blood
hair's breadth of a capillary. Capillaries merge into veins, which carry the blood back to the heart
Article · 4 min read
The Human Body
Muscles
hairs on your arms stand up. You cannot control it and rarely feel it. Cardiac muscle
Article · 4 min read
Plants & Fungi
Fungi
hair, spreading through soil, wood or whatever it is feeding on. This network, the mycelium, is the fungus
Article · 4 min read
Animals
Reptiles and Amphibians
hairs on their toes, to the chameleon with its colour changes and a tongue longer than
Article · 3 min read
Chemistry
The Chemistry of Life
hair and nails; collagen holds skin and bones together; and the proteins actin and myosin make
Article · 3 min read
Matter, Energy & Physics
Sound
hair cells in the inner ear. Echoes and sonar Sound bounces off hard surfaces, producing an echo
Article · 3 min read
Animals
Mammals
hair at some point in their lives, both feed their young on milk, and both breathe
Article · 4 min read
The Human Body
The Immune System
hairs that sweep them out. The gut is crowded with friendly bacteria that leave no room
Article · 4 min read
